en echelon
en echelon
[′en ‚esh·ə‚län] (geology)
Referring to an overlapped or staggered arrangement of geologic features.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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Anomalous gold values are denoted in many areas within this zone, and significant higher-grade mineralization over significant widths is located within sub vertical en echelon zones of intense alteration and gold enrichment.
The 3D model of the Cuncayoc Copper 3D Area (Area 1) shows a number of NE-SW orientated magnetic bodies arranged en echelon along the NW-SE trend.
This structural province is characterized by east-west to northeast oriented parallel to en echelon, plunging anticlines and synclines pairs that are asymmetric to overturn in the form of fold train and dominantly southeast vergent.
It appears that the rigid, en echelon shields formed by jointed arm branches are an adaptation to strengthening the crown and gathering food in highly variable, strong currents in a shallow reef or bioherm environment.
Three of the faults, known as en echelon faults, were parallel but offset from each other, while the fourth fault was perpendicular to and crossed the first.
The en echelon 1 to 10 m-wide shear structures are persistent at depth and often merge in that direction too.
These strike--slip faults are parallel and form an "en echelon" system with Garrapatas fault zone.
This range is characterized by eastwest to north-northeast trending parallel to en echelon, plunging anticline and syncline pairs that appear asymmetric to overturn in the form of fold train and dominantly south vergent.
Generally the prospect has been previously interpreted as an en echelon shear system striking northwest and dipping 65 degrees to the south-west.
The pattern exhibits relatively short, en echelon fault segments of synthetic R and antithetic R' shears oriented at low- and high- angles to the main fault zone.
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